Catalytic performance of the biosynthesized AgNps from Bistorta amplexicaule: antifungal, bactericidal, and reduction of carcinogenic 4-nitrophenol

Abstract

<jats:title>Abstract</jats:title><jats:p>This study was focused to synthesize silver nanoparticles (AgNps) from the aqueous extract of <jats:italic>Bistorta amplexicaule</jats:italic> and to evaluate their antimicrobial, antifungal, and 4-nitrophenol (4-NP) degradation potential. The AgNps from <jats:italic>B. amplexicaule</jats:italic> were characterized by field emission scanning electron microscopy, energy dispersive X-ray spectrometry, X-ray diffraction, and X-ray photoelectron spectroscopy studies. The biological activity of the AgNps was checked against the three bacterial and two fungal strains. The inhibition activities of the synthesized nanoparticles on pathogenic bacteria and fungi were equally studied using the colony-forming unit method. The AgNps synthesized showed excellent bactericidal and fungicidal activities against pathogenic <jats:italic>Escherichia coli</jats:italic>, <jats:italic>Staphylococcus aureus</jats:italic>, methicillin-resistant <jats:italic>Staphylococcus aureus</jats:italic> (MRSA), <jats:italic>Candida albicans</jats:italic>, and <jats:italic>Candida tropicalis</jats:italic>. The removal of nitrophenols is one of the most demanding tasks, due to their injurious impact on the health of the living organisms. The AgNps showed superior performance compared with the pure plant extract. The AgNps also displayed efficient catalytic ability in reducing toxic 4-NP into harmless 4-aminophenol in the presence of NaBH<jats:sub>4</jats:sub> solution. Hence, the synthesized AgNps can be effectively used against bacterial and fungal infections and in the decontamination of 4-NP polluted water.</jats:p>

Development of Novel Peptide-Modified Silver Nanoparticle-Based Rapid Biosensors for Detecting Aminoglycoside Antibiotics

“…Core-level analysis of the XPS survey indicated two prominent peaks for Ag(3d) electron binding energy: 373.68 eV for Ag0 3d 3/2 and 367.89 eV for Ag0 3d 5/2 , with a spin−orbit separation of about 5.79 eV (Figure 2c). These Ag peaks observed in the XPS analysis closely matched those reported in the literature 77 and confirmed the absence of Ag ions, indicating the presence of CHPs@AgNPs in a zero oxidation state. The core-level analysis of the XPS spectra showed a single peak at 531.3 eV for O(1s), which corresponds to the oxygen atom of the carbonyl groups (C�O) (Figure 2d).…”

Catalytic reduction of para nitrophenol by green-fabricated silver nanoparticles (AgNPs) from Solanum lycopersicum L. leaf extracts

“…It has been detected in industry wastewater and is toxic to aquatic life, humans and animals and thus has to be removed (Yang et al, 2023;Chen et al, 2017). Previous research has demonstrated greensynthesized AgNPs as a more sustainable and environmentally friendly alternative to conventional catalysts which utilize expensive chemicals and generate toxic by-products in the process (Rani et al, 2020;Shah et al, 2020).…”